Answer: D

Reasoning: A simple transverse symphyseal fracture can be stabilised with lag screws, a 2 mm dynamic compression plate or even a heavier 2.5 mm monocortical plate, all of which provide adequate bicortical or load-sharing fixation. Standard recommendations based on Champy’s principles call for 2.0 mm plates (often two) in this region, whereas a single 1.5 mm miniplate is designed for mid-facial bones, is too thin to counter torsional forces at the mandibular symphysis and is therefore not considered acceptable for definitive fixation [Davies 1992, PMID 1622016; Bolourian 2002, PMID 11815915; Agnihotri 2014, PMID 23928155].